The 843 area code covers Charleston, Florence and 70 more places in South Carolina.
Area code 843 is in South Carolina, on Eastern Time. In the 843 area, phone numbers are given out most in Charleston County, then Horry and Florence counties. It has been in service since March 22, 1998. 854 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in South Carolina, mostly Charleston County, Horry County and Florence County
- Time zone
- Eastern Time
- In service since
- March 22, 1998
- Shares its area with
- 854 (since 2015)
- Prefixes in use
- 781
- How to dial
- Local calls need all 10 digits: 843-555-0142.
Find out who called you from an 843 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (843) number is on today, use our free carrier lookup.
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Charleston holds 24% of the phone prefixes in area code 843.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 781 prefixes in use shows where 843 numbers are actually given out.
- Charleston186 prefixes, 24%
- Florence57 prefixes, 7%
- Myrtle Beach56 prefixes, 7%
- Beaufort31 prefixes, 4%
- Hilton Head Island28 prefixes, 4%
- Mount Pleasant19 prefixes, 2%
- Georgetown16 prefixes, 2%
- Summerville16 prefixes, 2%
Also served: Bluffton, Moncks Corner, Hartsville and Conway and 60 smaller places.
BellSouth (AT&T) holds the most phone number prefixes in area code 843: 137 of 781.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 781 prefixes in use in 843 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| BellSouth (AT&T)AT&T's landline company | 137 | 18% |
| T-MobileMobile network | 79 | 10% |
| PAETEC (Windstream)Windstream's business phone network | 58 | 7% |
| FrontierLandline company | 57 | 7% |
| AT&T MobilityMobile network | 53 | 7% |
| Level 3 (Lumen)Lumen's business and wholesale network | 42 | 5% |
| 38 other carriers | 355 | 45% |
60% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
843 has been overlaid once since 1998.
1998
843 starts on March 22, 1998, split off from 803.
2015
On October 19, 2015, 854 is added on top of 843, so new numbers here can get either code.
An 843 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 843 are 803, 910 and 704.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
South Carolina has 5 other area codes.
These are the questions people ask most about area code 843.
Where is area code 843?
843 covers Charleston, Florence, Myrtle Beach and Beaufort and 68 more places in South Carolina. In the 843 area, phone numbers are given out most in Charleston County, then Horry and Florence counties.
What state is area code 843 in?
South Carolina. 843 is a South Carolina area code on Eastern Time.
What cities use area code 843?
The places holding the most 843 prefixes are Charleston, Florence, Myrtle Beach, Beaufort, Hilton Head Island, Mount Pleasant, Georgetown and Summerville, out of 72 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 843?
No single phone company owns 843. NANPA's records show BellSouth (AT&T) holds the most 843 prefixes, 137 of 781, followed by T-Mobile and PAETEC (Windstream). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 843 in?
843 is on Eastern Time.
When did area code 843 start?
843 went into service on March 22, 1998, when it was split off from 803.
Is 843 the same area as 854?
Yes. 854 (since 2015) covers the same ground as 843. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial an 843 number?
Local calls need all 10 digits: 843-555-0142.
Is 843 a toll-free number?
No. 843 is a regular area code for Charleston and Florence in South Carolina, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 843?
The closest are 803/839 (Columbia, South Carolina), 910/472 (Fayetteville, North Carolina), 704/980 (Charlotte, North Carolina) and 864/821 (Greenville, South Carolina), measured between the centres of each area.
Who called me from an 843 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 843 a scam?
843 is a real South Carolina area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.